Improvement in mitering-machines



H. MALIN, e. w. MALIN, & A. DLMALIN.

Improvement in Mitering Machines 25 745 Patented A p r iI16,1 872.

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UNITED STATES PATENT OEEIcE.

HARRY MALIN, GEORGE W. MALIN, AND ALBERT D. MALIN, OF PLEASANT- VILLE,PENNSYLVANIA.

IMPROVEMENT IN MlTERlNG-MACHINES.

Specification forming part of Letters Patent No. 125,745, dated April16, 1872.

Specification describing. a new and useful Improvement inMitering-Machines, invented by HARRY MALIN, GEORGE W. MALIN, and ALBERTD. MALIN, of Pleasantville, in the county of Veuango and State ofPennsylvama.

The invention relates to mitering-machines for cutting picture-frame andbox joints; and consists in the invention hereinafter fully describedand subsequently pointed out in the claim.

In the accompanying drawing, Figure 1 represents a side elevation of themachine, partly in section. Fig. 2 is a front elevation. Fig. 3 is avertical section of the machine on the line as a: of Fig. 4.. Fig. 4. isa horizontal section looking down from the line 3 y of Fig. 5. Fig. 5 isa sectional side view.

Similar letters of reference indicate correspondin g parts.

A is the frame, consisting of the long uprights B and G and the twoshort uprights D and E. F F are horizontal timbers, which connect thelong and the short uprights together. G is a cross-piece, which connectsthe upper ends of the two short uprights. H is the bed of the machine. Iis the adjustable table, which is supported by the horizontal timbers FF and cross-timber Gr when it stands at right angles with the plane. Jis the plane, which is confined in grooves in the uprights B (J, as seenin Fig. 4, to which a vertical motion is imparted by means of treadle Kand spring L, or by any other convenient means. The plane has a doubleface, with two cuttingbits, arranged, as seen in the drawing, so as togive a drawin cut. The table I is raised to an angle of forty-fivedegrees, as seen in Fig.

1, but it may adjusted to any intermediate angle, and fastened by meansof the curved plate M, attached to the bottom of the table, which platepasses down through a mortise in the cross-piece G, where it is fastenedby the setscrew N. The fronts of the two long uprights have metallicplates thereon, as also hasthe edge of the table, so arranged that thetable turns up asona hinge. The ends of the plate on the edge of thetable extend out a little from the table,so that they engage with thecircular bars 0 O on the sides of the frame.

We do not confine ourselves to this partic ular arrangement of thetable, as it may be confined and made to turn up in various Ways. Whenin the position seen in Fig. 1, it is ready for the molding or otherpiece of wood for cutting a true miter when motion is given to theplane.

For a joint other than a miter, the table is lowered and fastened at anyother angle. When placed as seen in Fig. 5, the plane will square theends of a piece of wood for a right-angled joint. P is a guide attachedto the top of the table by-means of a vertical plate, R, so that itscenter shall stand at right angles with the face of the plane, upon theinner end of which guide is the right-angle plate Q. By putting thisguide-plate Q upon the table, as seen in Fig. 4, pieces of board formaking boxes or for other purposes may be cut edgewise while restingupon the table. This guide may be made adjustable on the table, so thata piece of lumber or a board when standing on edge may be cut to anyother angle than a miter.

We do not limit or confine ourselves to the precise form or arrangementof any of the parts herein shown and described, as they may be varied inmany ways without departing from our invention.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- The combination of table I, plane J, guide I,and plate Q, as and for the purpose described.

HARRY MALIN. GEORGE W. MALIN. ALBERT D. MALIN. Witnesses:

W. E. BANKS, W. W. PENNELL.

